label.xh:before {
				margin-top: 20px;
				margin-left: 50px;
				content: '*';
				color: red;
			}
			.wenben {
				height: 50px;
				width: 500px;
			}
			.tianjia {
				background-color: #1ec8ff; 
				margin-left: 136px; 
				color: white; 
				border-radius: 4px;
			}
			.fanhui {
				background-color: #ffe1f2; 
				border-radius: 4px;
			}
			.submit {
				background-color: #1EC8FF;
				color: white;
				border-radius: 4px;
			}
		